Exzweights, Exzbikes, and Machines all have CSV upload and download
capability.  Still have not completely tested the ability of the
latter to handle improperly formated csv files.

 On branch master
 Your branch is up-to-date with 'origin/master'.

 Changes to be committed:
	modified:   app/controllers/exzbikes_controller.rb
	modified:   app/controllers/exzweights_controller.rb
	modified:   app/models/exzbike.rb
	modified:   app/views/exzbikes/index.html.erb
	modified:   config/routes.rb